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CVE-2022-45442

Sinatra vulnerable to Reflected File Download attack

Sinatra is a domain-specific language for creating web applications in Ruby. An issue was discovered in Sinatra 2.0 before 2.2.3 and 3.0 before 3.0.4. An application is vulnerable to a reflected file download (RFD) attack that sets the Content-Disposition header of a response when the filename is derived from user-supplied input. Version 2.2.3 and 3.0.4 contain patches for this issue.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Debian Redhat Sinatrarb
Products
Debian Linux Enterprise Linux Rhel E4s and 3 more
CVE-2025-61921

Sinatra has ReDoS vulnerability in ETag header value generation

Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0, there is a denial of service vulnerability in the `If-Match` and `If-None-Match` header parsing component of Sinatra, if the `etag` method is used when constructing the response. Carefully crafted input can cause `If-Match` and `If-None-Match` header parsing in Sinatra to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is typically involved in generating the `ETag` header value. Any applications that use the `etag` method when generating a response are impacted. Version 4.2.0 fixes the issue.

CVSS 4.0 · 2.7 Low EPSS < 1% KEV · Not listed
Vendors
Sinatrarb
Products
Sinatra
CVE-2018-7212

rubygem-sinatra: path traversal via backslash characters

An issue was discovered in rack-protection/lib/rack/protection/path_traversal.rb in Sinatra 2.x before 2.0.1 on Windows. Path traversal is possible via backslash characters.

CVSS 3.1 · 5.3 Medium EPSS 1.8% KEV · Not listed
Vendors
Microsoft Sinatrarb
Products
Windows Sinatra